(19)
(11) EP 0 910 066 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.03.2000 Bulletin 2000/13

(43) Date of publication A2:
21.04.1999 Bulletin 1999/16

(21) Application number: 98308454.2

(22) Date of filing: 15.10.1998
(51) International Patent Classification (IPC)7: G10L 5/00, G10L 19/00, H04L 1/00, H03M 13/15
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 17.10.1997 JP 28590397

(71) Applicant: SONY CORPORATION
Tokyo (JP)

(72) Inventor:
  • Maeda, Yuuji, Sony Corporation of 7-35
    Shinagawa-ku, Tokyo (JP)

(74) Representative: Ayers, Martyn Lewis Stanley 
J.A. KEMP & CO. 14 South Square Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB)

   


(54) Coding method and apparatus, and decoding method and apparatus


(57) An audio encoder 3 divides on a time axis an input audio signal into predetermined coding units and executes coding to each of the coding units so as to output a plurality of types of audio coded parameters. A CRC code calculation block 5 selects important bits for the hearing sense from the audio coded parameters of the plurality of types from the audio encoder 3, and creates a CRC check code from the important bits. A convolution encoder 6 executes a convolution coding to the CRC check code and the important bits from the CRC code calculation block.






Search report